Acrilla semicostata
| Acrilla semicostata | |
|---|---|
| |
| Shell of † Acrilla semicostata (specimen at MNHN, Paris) | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Superfamily: | Epitonioidea |
| Family: | Epitoniidae |
| Genus: | Acrilla |
| Species: | †A. semicostata
|
| Binomial name | |
| †Acrilla semicostata (J. Sowerby, 1814)
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| Synonyms | |
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Acrilla semicostata is an extinct species of sea snail, a marine gastropod mollusk in the family Epitoniidae, the wentletraps.[1]
Description
(Original description) The seven whorls are contiguous. The spire is transversely striated with numerous, slightly raised ribs. The lower part of each whorl is smooth and naked. The ribs scarcely cover two-thirds of each whorl. [2]
Distribution
Fossils of this marine species have been found in Eocene strata in Val-d'Oise, France and in Barton on Sea, Great-Britain.
References
- ^ WoRMS. "Acrilla semicostata (J. Sowerby, 1814) †". World Register of Marine Species. Retrieved 16 March 2024.
- ^ Sowerby, J. (1812-1815). The mineral conchology of Great Britain; or coloured figures and descriptions of those remains of testaceous animals or shells, which have been preserved at various times and depths in the earth (Vol. I). London, privately published, pp. i-vii, 9-234 + index
This article incorporates text from this source, which is in the public domain.
- Cossmann (M.) & Pissarro (G.), 1907 - Iconographie complète des coquilles fossiles de l'Éocène des environs de Paris, t. 2, p. pl. 1-9 (
- Le Renard (J.) & Pacaud (J.-M.), 1995 - Révision des Mollusques paléogènes du Bassin de Paris. 2 - Liste des références primaires des espèces. Cossmanniana, t. 3, vol. 3, p. 65-132